C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 4/68 (2006.01) C08F 10/00 (2006.01)
Patent
CA 2241486
A process for production of an olefin polymer having long chain branching is described. The process comprises the step of polymerizing an olefin monomer in the presence of a catalyst system comprising: a catalyst comprising a compound containing vanadium with the proviso that the compound does not comprise a halogen directly bound to the vanadium; an organoaluminum cocatalyst having a halogen to aluminum molar ratio in the range of from about 1 to about 2; and an activator having Formula I: (see formula I) wherein: R1 is selected from the group comprising a substituted or unsubstituted C1-C10 alkyl, a substituted or unsubstituted C5-C20 aryl group and a substituted or unsubstituted C3-C20 cycloalkyl group, with the proviso that the moiety -C(O)OR1 may be substituted by a member selected from the group comprising a carbonic acid derivative, a keto group and a nitrite group; R2, R3 and R4 may be the same or different and each is selected from one of the following groups: (a) R1; (b) a halogen; and (c) hydrogen, a substituted or unsubstituted C1-C10 alkyl, a substituted or unsubstituted C5-C20 aryl group, a substituted or unsubstituted C1-C10 alkyl oxy group, a substituted or unsubstituted C5-C20 aryl oxy group or C(O)OR7, wherein R7 is a C1-C20 hydrocarbon group; with the provisos that: (i) at least one of R2, R3 and R4 is selected from group (b); and (ii) in the activator of Formula I, all of the following are not satisfied: R1 is a C1-C6 alkyl group, R2 is a C1-C6 alkyl group or C1-C6 alkoxy group, R3 is chlorine, bromine or hydrogen, and R4 chlorine or bromine.
Padliya Dilipkumar
Zahalka Hayder A.
Bayer Inc.
Fetherstonhaugh & Co.
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